A New York gun law that has been in place since 1913 was struck down in a 6-3 vote. This allows more people to legally carry guns on the streets.
Justices say Americans have the right to carry firearms in public for self-defense. Previously, New Yorkers had to have a specific need to carry a concealed handgun in public. Now all they will need is a permit.
Supreme Court justices say the previous law conflicted with the Second Amendment.
NYPD Police Commissioner Keechant Sewell spoke out against the ruling, saying it "should concern us all."
Some New Yorkers told News 12 that allowing people to carry guns in public in the name of self-defense does not make them feel more safe on these streets, especially in the wake of several recent mass shootings.
Those who are against the ruling plan to rally outside of every federal courthouse nationwide, including at the New York Supreme Court.